On 11/6/10 2:06 PM, Alan Madill wrote:
> I'm in the early stages of replacing a linux based router and VPN server and 
> I'm 
> hoping to get some suggestions on the best way to implement it using 
> Shorewall.  
> I've used Shorewall before on a half dozen routers and I can work my way 
> through 
> the man pages and howtos.  I just don't wish to start off with the wrong 
> strategy.
> 
> Router has two ethernet i/f's, eth0 connected to the Internet and eth1 
> connected 
> to a tagged VLAN fiber backbone.
> 
> Zone's
> - corporate - VLAN2 and VLAN3 - two subnets to different buildings with 
> routing 
> between them.  Default gateway for the corporate WAN is a router on VLAN2.
> - industrial - VLAN4 and VLAN5 - two subnets to different buildings with 
> routing 
> between them.
> - internet - PopTop pptpd server on router so that outside systems (limited 
> by 
> an extensive ACL) can connect to the industrial zone.  Also a ssh server 
> protected by the same ACL.
> 
> No communication between corporate and industrial zones required but it might 
> be 
> nice to be able to reach the time server on the DC on VLAN2 from the 
> industrial 
> zone.  I think I could do that with DNAT.
> 
> Dhcp relay running on the router to relay dhcp requests from VLAN3 to the DC 
> on 
> VLAN2.
> 
> The system that we are replacing used to be the main NAT router to the 
> Internet 
> for the corporate side.  As such it has it's default gateway on the Internet 
> and 
> a large routing table to direct anything on the corporate side out via the 
> WAN 
> router.  This is a pain to maintain.  I'd rather have the WAN router be the 
> default.
> 

If your routing environment is that complex, then:

a) Shorewall will never be a solution to your problem.
b) You need to implement a routing protocol internally.

-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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